I use two adjacent 23-inch flat panel displays, and quite often I can't find the mouse cursor, so this software does help, and being free, it's hard to complain! However I feel it does the wrong thing. What would be better would be a mouse cursor that lights up, or flashes (instead of being surrounded by concentric circles) - and which does this when you shake the mouse, a la xGestures. As it is, however I tweak the configurations, the luminescent circles just appear too often, and get annoying (doubly annoying, because sometimes you do need it, but only sometimes). But kudos to the developer for the free software!